Redundant array of independent disks in a direct-mapped flash storage system
US10402266B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2017 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Aug 18, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2029/0411
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one implementation, storage system includes embedded storage devices, where each embedded storage device includes a direct-mapped solid state drive (SSD) storage portion and storage system controllers. The storage system controllers may be operatively coupled to the embedded storage devices via a bus. The storage system controllers may receive data to be written to the plurality embedded storage devices, select a plurality of available allocation units from the direct-mapped SSD storage portions of the plurality of embedded storage devices, respectively, and calculate a verification signature corresponding to the data. The storage system controllers may also write the data and the verification signature to a first subset of the plurality of available allocation units, calculate an erasure code corresponding to the data and the verification signature, and write the erasure code to a second subset of allocation units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.